uxcell Forstner Drill Bits 20mm, Tungsten Carbide Wood Hole Saw Auger Opener, Woodworking Hinge Hole Drilling Boring Bit Cutter, 2pcs (Blue, Gray)

1. Forstner Bit drill clean holes in soft and hard wood.2. Two spurs and centering point to give the perfect solution to repeated, clean and accurate hole cutting time after time.3. The sharp center spur accurately locates the center of your hole.4. Use to drill precise flat bottom holes with no chipping in any thickness of soft wood.5. For drilling holes in any direction and making arched openings. For drilling partially overlapped flat bottom holes for easy mortising.6. Should be use with bench drill, vertical drilling machine, CNC carving machine. Tips: Maximum speed: 2000rpm. Used on desktop (fixed) equipment, and can NOT be used on handheld power tools (such as hand drill or electric drill). Can not drill metal and non-ferrous metal. To avoid causing damage, be sure no nails or other metal objects in wood before drilling. The cutting edge and tip of the opener should be sharpened in time. Specification:Product Name: Forstner BitMaterial: Carbide, Carbon SteelCutting Diameter: 20mm / 0.79 inchShank Diameter: 7mm / 0.28 inchShank Length: 26mm / 1.02 inchTotal Length: 78mm / 3.07 inchPackage Content: 2 x Forstner BitWeight: 86g; Main Color: Gray,Blue Please Note:1.When drilling holes, forstner drill bit is made only in the clockwise direction, not reversible, and the speeds from low to high is a gradual process.2.Please grind the tool nose and tips to avoid ageing and damage when breaking; or it will cause a steep decrease in accuracy and quality for drilling holes after tips break.